Brick lifting and transferring mechanism



2 Sheets-Sheet l I. H. WILSEY BRICK LIFTING AND TRANSFERRING MECHANISM Filed Jan. 5,v 192'? Feb. 24, 1931.

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BRICK LFTING AND TRANSFERRING MECHANISM Filed Jan. 5, 192'? 2 sheets-sheet 2 a www Patented Feb. 24, 1931 PATE- InvnN E. -WILsnY, or CHICAGO, ILnrN-ors, Assrenoa or ONE-Herr 'remains isf 'rtrr- HILL, or CHICAGOJLLINOIS: j

BRICK LIFTING- AND 'rRANsr-ERRING ivrnc'mnrsivr The present invention relates to improvementsv in a brick-lifting and transferring A mechanism, and particularly a mechanism for handling a large stack et bricks as a unit.-

` 5p Mechanisms ot the 'abcve character are 10: Whicl'rhave clamping means for engaging thel bricksin said layers so as to constitute the latter and the arms- 'a support for the entire stack; 1

The primary object of the present inven tion residesv in the provision in such mechanismV of novel clamping means which are hydraulically actuated so asto obtain: elasticity and a V`uniformclampingk pressure A'urther object is to provide a bricksimple in construction, and does not. com

prise a com'pli-catedv system of levers,` links,

and springs,as is common in many priorl art .'constructions, for` actuating the clamping improved brick-.handlingfork which is re'- sponsive andeffici-ent in operation, and which VingY effect on one; or'more of Aof a stackofj bricks. g' f v v 'Specific' objectsv of the: invention reside 1n farms;-

Ancillary objectsandfadvantages will be-V j come apparent as the description proceeds-- In the accompanyingdrawifngs, irl-Which ofvvtlilbrick fork.`

Fig; 2 is aplan v1evv.. Y

view of one end yof one VOrprOngS'.V

Fig. 451s' a ytransverse ,sectional :View

,through a pair ofarms, taken along line 4 4:4

'Y einige. Y

' 5e Fig.;- 5- is ya transversey sectional: View .to the .specific formdisclosed,bntintend t0 cover all mochiicatrons and valternative con structions 'alll'irg wrt-hin. thel spiritv and scope 1 claims.k

handling .device or forkl which is yextremely means, Whichis inexpensive in construction, y'and which is easy and quick toT H'lampulate.

ASti-ll another'object istoiprovide a new and v forklike structure-,13. seeuredf to,` the i frame I'liave illustrated the preferredembodiment-- of inventiomilligure lis an end elevation through a pair 'of armstaken-alonlg .linea-Q57" of Fig. 3.

While the invention is ksusceptible variousfmodiications and Valternattire con,-

structions, I haveyshc-Wn inV the drawings and Will hereinadescribe in detail, the preferred embodiment, but it is. tolbe understood that I do-notthereby intend to: limit the invention i of the invention asexpressedin the appended 'Referring to ithe drawings, the exemplary embodiment Orff` `the invention comprises. 4a

lframe Which'm-ay khave suitable form, A

and Which the present. instance Vconsists of a vertical Webbed plate orgframe member I 'l0-.J A pair of s-pacedhorizental arms llare v'secured transversely 'toithge upper edge of.

the member 10, and preferably areftermed vvintegral therewith. #These rarms Y, extend mainly tofone side'ezt` the member 10," and are adapted tef be connected te a suitable supporting means'f(not sho'wn Y .75 Projecting laterally from: *theloweV edgeI 'of the frame member 10 and underlying the arms 1'1, arev apluralityof spaced' parallel A lifting arms, bars orprongsjlQ. vffl-rese bars Y 12 preferably "are4 kformed an#V integral.

member by any suitable means, such 'as fthe bolts 14. i.Ifo?itacilitatefinsertion' ofthe Y'fthe specific clamping deviceY 0n' tha liftingforkl into suitablespaces between" bricks the basic layersy ef; a` stack, each barflQ.

land 17 ofa Vstack of bricks.,Y l'llflr'e' full secondl basic. Ylayerv 17 is sho-Wnj 2..

smooth surface against which one new Afot the lower basic layers 'lanld l17 adapted preferably the tvvo VVKbasic layersy 17 The bricks `in. each layer are arranged in rowsflS Vof two, separatedby spacesfl.. @ne side-ofeach liftingb-arj 12 is providedtwitlra Figt 8 isfan enlarged fragmentary side. of the supportingvarms 95 I tobe clampe-d'lhe other*si-depot'eachlbar V12 is provided Witha plurality of clampingA devices. `VvWhile thebasicllayer 16 'alo-he Pof the stack may beV clamped'to thebars 12,

are so clamped, and hence two sets of clamping devices are provided.

Each of the clamping devices for the sec- I ond basic layer 17 of bricks (see Fig. 4) comprises a clamping dog or plate 2()Y which is pivoted at its upper end on a pin 21 between a pair of lugs 22.V Thesevlugs are fixed to V'the lifting bar.

o formed on the closed end of a'l movable cyllayer 17.

the inner wall of a recess 23 in one side of n d The pivoted end of the clamping dog is bifurcated. A spring 24 tends to hold the dog 2O within the recess 23 and out of clamping engagement with the `The upper end of a link 25 is pivotally secured to the clamping dog 20 and between the bifurcated arms thereof. The

lower end of the actuating link 25 is pivot-V .'Llly connected to a pair ofspaced lugs 26 inder 27. This cylinder is slidably mounted on a stationary piston 28 rigidly mounted Vin the lower endof .the recess 23. Pressure fluid, such as compressed air, is adapted to beadmitted to' the cylinder 27 through a central axial bore 29 inthe piston, Vsaid bere being connected to anair duct orpassage30 formed in the lifting bar. vThe airduct 30 isv connected toa suitableV air supply line 31 f provided with a suitable control valvefr(not shown). It will be evident that the clampingdog 2O c onstitutes a third-class lever.v and that the bifurcated arms ofthe 'dog and the link '25' constitute atoggle for movingthe end of the dog outwardly into clamping engagement with the adjacent side of the'brick when pressure fluid inder 27. y l f Each of the clamping devices for the first basic layer 16 of bricks (see'Fig. 5) comprises a clamping, dog or plate 32 havingan` upper bifurcated end.: The dog 3.2 ispivoted intermediate its end-s on a-pin 33 between two lu gs 34. These lugs fare mounted beside the cylinder 427 in the recess 23. A spring 35, preferably. coiledon the pivotA pin33 and respectively engaging the lifting bar 12 and the dog 32 at its opposite ends, tends to Yieldingly retain the dog within ther'ecess 23 and out ofclamping engagement with vthe/brick.

The bifurcated end lofthe clamping dog 32 is pivoted to the lower end .of asvertic'al link 36. The upper end of the link"36"exten`ds into an axial bore37` in the' lowerl end lo'fa piston 38, and is ltherein pivotallyrconnected to the piston.

e lbar12, and communicating directlywith the air supply duct V30. i Itwillgbeevident thatv the clamping dog 32,-constitutesa first-'class lever movablel outwardlyinto clampingfengement with the brick when pressure fluid `isadmittedfto thegcylinder 39. Y

' VIn operation, the lifting bars 12 are mved Y 'into'. the spaces'19;Y VVPressure fluid, such as compressed air, is 'then suppliedto the ductV 30. The compressed air enters the cylinders The latter is reciprocable in a vertical.-` c'ylinder 39 formed* inV the I `lifting 27, and raises the latter to force the clamping dogs 2O outwardly and upwardly into engagement with the rows 18 of the second layer 17 of the stack, thereby clamping said rows securely against the'smooth sides of the lifting bars12. Pressure vfluid also enters the cylinders 39 and'forces thepistons 38 downwardly, thereby moving the clamping dogs 32 outwardly into clamping engagey which is simple and inexpensive in construc-.

tion, by which the basic layers of a brick stack are clamped uniformly 'through the medium of a flexible clamping force7 thereby thatl have provided a compensating Vfor irregularities. in `the sur.

face of the brick, and which is .efficient in. operation'.

I claimias my invention:

1. A brick fork having, in combination, a pair of lifting. bars, aj 'series of recesses formedfin one side'of one bar, a series of clamping dogs pivotally" mounted in said recesses for Vclamping the upper layer of two layers 'of brick against the' `adjacent side of the other bar, a series of clamping `dogs pivotallymounted in said recesses for clamping the lower'layerof saidtwo layers of brick against the adjacent side of said other bar,

al'plurality of piston and cylinder units, one Y for each clamping dog, means operatively connecting the movable member of each pisa ton and cylinder unit to the associateddog, and means for supplying fluid pressure to said piston and cylinder units. 2. A brick fork having,'n combination, a frame, a plurality of parallel spaced lifting bars mounted on said frame, 'one side ofieach.

bar presenting a smooth clamping' surface, a plurality of clamping plates -`movably a pluralityof piston and cylinder units oper# atively connected-respectively to said clampformed in said barsand,openingtosaid units ,for sup lying fluid pressure toi said units;

A rlck fork having, in tcombi-nation,a

frame7 a plurality ofparallel spaced lifting :bars on said. frame, a` plurality .of clamping 'dogs inovably mounted in said bars, spring means tending to hold said clampingdogs -mounted in the other side of` each bar and i adapted to clamp Vbrick against said.surface, A'115 ,ing plates for actuating lthe latter, andducts in inoperative position, a plurality of piston and cylinder units one'operatively connected Vto each of said dogs for moving the'latter into clamping engagement withV brick he-v Y tween said bars, and Ameans for supplying fluid pressure to said piston andcylinder units. Y Y

4. A brick-fork having, in combination, a frame, a plurality of parallel lifting bars mounted on said frame and adapted to be insertedinto spaces between tliebrick of thetwo basic layers of a stack, a series of clamping devices arrangedV on said bars tov engage the rst basic. layer kof the stack, a series of clamping devices arranged on said bars to engage the secondv basic layer of said stack, a plurality of independent fluid pressure responsive meansfor actuating said clamping devices, and means for directing-fluid sure to said first mentioned means.V v

5. In a brick fork, Vin combination, a lifting bar, ar clamping Vmember pivotally mounted on said. bar,.a piston and cylinpresvder unit one member of which is fixed to said bar and the other member of which is movable, a linkV connecting said movable member to said clamping member, and a fluid pressure supply passage opening into the v cylinder of said unit.

V6. In a brick fork, in combination, a horizontal lifting bar, a pair of vertically spaced A .clamping-members mounted on said .bar for movement 'laterally thereof, a plurality of spaced piston and cylinder units, theV movable elements of said units being operatively connected respectively to said members, said A barbeing formed with a duct communicating with said units for directing pressure fluid thereto tourge said members outwardly from said bar, and spring means-tending to urge said members inwardly'toward Vsaid bar.

In testimony whereof, I have hereunto afxed my signature.

rRvnN wILsEY.V 

